Clip for tentering-machines.



-No. 655,205. Patented Aug. 7, I900.

. F. DANA.

CLIP FOR TENTERING MACHINES.

(Application filed May 26, 1900.)

(No Model.)

lV/T/VESSES;

UNITED STATES PATENT Fr es.

FREDERICK I. DANA, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE THOMAS PHILLIPS COMPANY, OF SAME PLACE.

CLIP FOE TENTERlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 655,205, dated August '7, 1900.

Application filed May 26, 1900.

To all whom it may concern.-

Beit known that I, FREDERICK I. DANA, of the city and county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Clips for Tentering-Machines; and I do hereby declare the following specification, taken in connection with the accompanying drawings, forming a part of the same, to be a full, clear, and exact description thereof.

The invention relates to clips or clamps for tentering or other cloth-stretchin g machines, and more especially to that class of clips in which the pivoted jaw is automatically con trolled by a guard which engages the fabric and holds the pivoted jaw away from the fabric until the edge of said fabric is disengaged from said guard, when the pivoted jawis released and' grips the fabric at the selvage.

In tenteringmachines the clips are carried by chains which travel on reciprocating and swinging side rails, and in cases where the pivoted jaws are closed by weights the swinging of the chains may be in such a direction when a jaw is released that the centrifugal force of the weight will prevent the accurate closing of the jaw upon the cloth. This difficulty may be overcome by using a spring for forcing the pivoted jaw toward the fixed jaw, which spring may be constructed to more quickly and positively close the jaw than is practicable with a weighted jaw, and which will not be afiected by the swinging of the side rails. It is essential, however; that the guard shall rest with a light pressure on the fabric; and the object of the present inventionis to provide a simple and efficient'means for connectingthe guard and the pivoted jaw which will allow the use of a comparativelyheavy spring for closing the jaw and still insure a light pressure of the guard on the fabric.

In the accompanying drawings, Figure 1 shows a side elevation of a' clip or clamp embodying the invention, the pivoted jaw being held open for the entrance of the fabric. Fig. 2 is a similar View showingthe guard resting on the fabric; and Fig. 3 is a similar view showing the pivoted jaw closed upon the fabric. Fig. 4 is a sectionaldetail. w

The parts of the clips are carried by substantially U shaped frames A, said frames besermntfis,os4. (No model.)

ing so constructed that they may be connected together to form a chain for a tentering-ma chine. The stationary jaw of the clip is formed by a plate 13, secured to the under side of the upper arms 0 of the frame and provided with the usual slot or slots for the passage of the finger or fingers a of the guard. The lower jaw D is pivoted at b to the lower arm E of the frame and is forced toward the stationary jaw by a spring 0, coiled about the pivot-rod of the jaw and having one end pressing against said jaw and the other end pressing against a pin d on the arm E. The guard F is pivoted at f to the arms 0 and has one or more fingers a for engaging the fabric. An arm 9 projects rearwardly from the jaw D and is provided with a shoulder in the form of a pin it, which is located at a comparatively-great distance from the pivot. The lower end of a thrust-arm t' engages the pin h, and the upper end of said arm is pivoted at It to an arm j, projecting from the guard F, the pivot being adjacent to the pivot f. While the spring exerts a strong pressure for quickly and positively closing the jaw D, the fingers of the guard are forced but lightly against the cloth, owing to the leverage obtained by the use of the long arm 9 and short distance between the pivots lo and f. When the jaw D is opened by the cam K, the pin 7?. may move away from the end of the thrust arm, and a guide m is preferably provided for insuring the engagement of the pin with the end of the thrustarm when the jaw D is released by the cam. The fabric enters between the jaws of the clip while the cam K holds the pivoted jaw open, and when the jaw passes 0d of the earn the spring forces the guard against the fabric n, as shown in Fig. 2. As the clips move outward the edge of the fabric releases the end of the guard, and the spring quickly and accurately closes the jaw against the edge of the fabric, as shown in Fig. 3. I

What I claim as my invention, anddesire to secure by Letters Patent, is-

1. A clip or clamp fora tentering-machine comprising an upper stationary jaw, a lower pivoted jaw, a spring tending to move said lower jaw about its pivot and force the same against the upper jaw, a pivoted guard for engaging the fabric, an arm-extending rear hin said arm, a vguard F pivotedto the upwardly from the pivoted jaw. and provided per arms of said frame, an arm 2' pivoted to with a shoulder, a thrustarm pivoted to the said guard near its pivot and having its lower guard adjacent to its pivot and resting upon end engaging said pin h, and a guide m ex- 5 "said silollllder. 1 f t t h tending down from the end of said arm 71.

2. c i ore am or a en erinq-mac ine i comprisin ggau-shaged frame,4a plate seeuredf H f ED DAN to the upper arms of said frame, a jaw D, piv- I iVitnesses-z oted to the lower arms of said frame, an arm W. H. THURSTON,

.10 9 extending rearwardly from said jaw, a pin J. I-I-. THURSTON: 

